(there is more than one answer, choose all that apply) what factors contributed to the rise of a consumer economy in the 1920s? a) influence of mass advertising b) higher interest rates c) buying on the installment plan d) decline in productivity

A, B, C

Explanation:

All helped cycle money through the economy and everyone could afford it because they just got out of WW1 and we took the fat W

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.